ERP correlates of action effect prediction and visual sensory attenuation in voluntary action
ERP correlates of action effect prediction and visual sensory attenuation in voluntary action
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DOI：
10.1016/j.neuroimage.2011.02.057
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发表时间：
2011-06-01
期刊：
影响因子：
5.7
通讯作者：
Waszak, Florian
中科院分区：
文献类型：
--
作者：
Hughes, Gethin;Waszak, Florian
自主行为效应的感觉衰减在躯体感觉和听觉领域都有广泛的报道。然而，相对较少的研究集中在视觉动作效应的感觉衰减的生理测量上。先前的一项研究发现，也许令人惊讶的是，听觉和视觉的感觉衰减都表现为顶点上的ERP幅度降低。本研究旨在使用一种新的范式来扩展这些发现，在该范式中，自愿行为要么与视觉行为效应有关，要么与无效应相关。至关重要的是，这让我们能够探索感觉衰减(通过比较ERPs与动作触发的刺激和外部触发的刺激)和动作效果预测(通过比较触发刺激的动作和没有触发刺激的动作)。关于感觉衰减，我们发现，皮层对视觉动作效应的反应从刺激后150ms开始，表现为额顶神经网络的激活减少。产生效果的动作和不产生效果的动作之间的差异在偏侧运动电位中观察到，可能反映了动作效果预测的大脑皮层相关。我们还观察到，在动作效应开始后，偏侧化的运动活动重新激活，这表明动作效应在视觉和运动皮质中有共同的表现。综上所述，这些发现有助于阐明自愿行为的皮质机制及其感官后果，并告知我们与外部世界的互动是如何处理和控制的。(C)2011 Elsevier Inc.保留所有权利。
Sensory attenuation of voluntary action effects has been widely reported in both somatosensory and auditory domains. However, relatively little research has focused on physiological measures of sensory attenuation of visual action effects. One previous study found, perhaps surprisingly, that both auditory and visual sensory attenuation were manifested as decreased ERP amplitude over the vertex. The present study aimed to extend these findings using a novel paradigm in which voluntary actions were either associated with a visual action effect or to no effect. Crucially, this allowed us to explore both sensory attenuation (by comparing ERPs to action-triggered versus externally triggered stimuli) and action effect prediction (by comparing actions that triggered a stimulus with actions that did not). With regard to sensory attenuation, we found that attenuation of cortical responses to visual action effects was manifested in a reduced activation of a frontoparietal network, from 150 ms after stimulus. Differences between actions that produced an effect and those that did not were observed in lateralized motor potentials and may reflect the cortical correlates of the action effect prediction. We also observed a re-activation of lateralized motor activity following onset of the action effect, suggesting a common representation of action effects in visual and motor cortices. Taken together, these findings help to elucidate the cortical mechanisms of voluntary action as well as their sensory consequences and inform how our interaction with the external world is processed and controlled. (C) 2011 Elsevier Inc. All rights reserved.